Improvement in plow-wheels



W S. LAWRENCE.

Plow-Wheels.

N0 156 427 f I Patented Nov-3,1874.

- fl z'inesses Imvemiorz W W UNITED STATES PATENT OFFICE.

WILLIAM S. LAWRENCE, OF KALAMAZOO, MICHIGAN, ASSIGNOR-OF ONE- HALF HISRIGHT TO LEBEUS C. CHAPIN, OF SAME PLACE.

IMPROVEMENT IN PLOW-WHEELS.

Specification forming part of Letters Patent No. 156,427, dated November3, 1874; application filed September 1'7, 1 874.

To all whom it may concern:

Be it known that I, WILLIAM S. LAwEENoE, of the city of Kalamazoo, inthe county of Kalamazoo and State of Michigan, have invented an-Improvement in Plow-Wheels, reference being had to the accompanyingdrawin gs, which form a part thereof.

The object of my invention is to make a plow-wheel that can be readilyadjusted so as to change the line of its direction relatively to theline of the beam of the plow, so as to make it run more or less to land,as desired.

- My invention consists in the concave receptacle and convex hub,whereby the direction of the wheel is changed by moving it laterally, ashereinafter more fully described.

In the annexed drawing, Figure 1 represents a side elevation of the endof the plowbeam and plow-wheel attached thereto. Fig. 2 represents afront view of the wheel, and the coupling attachment detached from theplow. Fig. 3 represents a vertical sectional view taken at the line as win Fig. 1.

A represents the plow-beam. B is an arm, pivoted to the beam A at C. Dis a vertical slotted arm, also connected to the beam A by means of abolt, E. F is a circular receptaole, concave upon its under side, andthe arms B and D are firmly and rigidly attached to it. G is the hub ofthewheel, and it has aconvex surface corresponding to the concavesurface of the plate F. H is the plow-wheel, and revolves on a spindle,I, on the hub in the ordinarymanner. J J are bolts which pass throughthe flangeof the hub Gand slots in the plate F. By loosening the bolts JJ and moving them forward in the slots in the plate F, the front side ofthe hub is carried out of the concave, and the rear side of the hubpasses deeper into the concave in the plate F, and the wheel stands atan angle to the line of the plow-beam. If

the bolts are adjusted so as to have the flange of the hub put even withthe sides of the concave in the plate F, thewheel stands parallel withthe line of the plow-beam; if the bolts J J are moved back in the slots,then the front edge of the flange is depressed in the concave, the rearedge of it thrown out, and the wheel forms an angle with the line of theplow-beam directly opposite from what it did when the bolts were drivenforward in the slots, as above described. It is obvious that the sameresults would be obtained by making the concave on the hub of the Wheeland the convex surface onthe plate F. The relative height of the Wheelto the plow-bearn is adjusted by raising or lowering the slotted arm Don the bolt E.

I claim- The plate F and hub Gr, provided with convex and concavesurfaces for attaching a plow-wheel, as described.

WILLIAM S. LAWRENCE. Witnesses HEINRICH F. BRUNS, LEwIs L. OoBUEN.

